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jack2/common/Jackdmp.cpp

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/*
Copyright (C) 2001 Paul Davis
Copyright (C) 2004-2013 Grame
Copyright (C) 2016-2022 Filipe Coelho
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <assert.h>
#include <cassert>
#include <csignal>
#include <sys/types.h>
#include <getopt.h>
#include <cstring>
#include <cstdio>
#include <list>
#include "types.h"
#include "jack.h"
#include "control.h"
#include "JackConstants.h"
#include "JackPlatformPlug.h"
#ifdef __ANDROID__
#include "JackControlAPIAndroid.h"
#endif
#if defined(HAVE_DBUS_1) && defined(__linux__)
#include <cstdlib>
#include <dbus/dbus.h>
#include "audio_reserve.h"
#endif
#if HAVE_SYSTEMD
#include <systemd/sd-daemon.h>
#endif
/*
This is a simple port of the old jackdmp.cpp file to use the new jack2 control API. Available options for the server
are "hard-coded" in the source. A much better approach would be to use the control API to:
- dynamically retrieve available server parameters and then prepare to parse them
- get available drivers and their possible parameters, then prepare to parse them.
*/
#ifdef __APPLE__
#include <CoreFoundation/CFNotificationCenter.h>
#include <CoreFoundation/CoreFoundation.h>
static void notify_server_start(const char* server_name)
{
// Send notification to be used in the JackRouter plugin
CFStringRef ref = CFStringCreateWithCString(NULL, server_name, kCFStringEncodingMacRoman);
CFNotificationCenterPostNotificationWithOptions(CFNotificationCenterGetDistributedCenter(),
CFSTR("com.grame.jackserver.start"),
ref,
NULL,
kCFNotificationDeliverImmediately | kCFNotificationPostToAllSessions);
CFRelease(ref);
}
static void notify_server_stop(const char* server_name)
{
// Send notification to be used in the JackRouter plugin
CFStringRef ref1 = CFStringCreateWithCString(NULL, server_name, kCFStringEncodingMacRoman);
CFNotificationCenterPostNotificationWithOptions(CFNotificationCenterGetDistributedCenter(),
CFSTR("com.grame.jackserver.stop"),
ref1,
NULL,
kCFNotificationDeliverImmediately | kCFNotificationPostToAllSessions);
CFRelease(ref1);
}
#else
static void notify_server_start(const char* server_name)
{}
static void notify_server_stop(const char* server_name)
{}
#endif
static void copyright(FILE* file)
{
fprintf(file, "jackdmp " VERSION "\n"
"Copyright 2001-2005 Paul Davis and others.\n"
"Copyright 2004-2016 Grame.\n"
"Copyright 2016-2023 Filipe Coelho.\n"
"jackdmp comes with ABSOLUTELY NO WARRANTY\n"
"This is free software, and you are welcome to redistribute it\n"
"under certain conditions; see the file COPYING for details\n");
}
static jackctl_driver_t * jackctl_server_get_driver(jackctl_server_t *server, const char *driver_name)
{
const JSList * node_ptr = jackctl_server_get_drivers_list(server);
while (node_ptr) {
if (strcmp(jackctl_driver_get_name((jackctl_driver_t *)node_ptr->data), driver_name) == 0) {
return (jackctl_driver_t *)node_ptr->data;
}
node_ptr = jack_slist_next(node_ptr);
}
return NULL;
}
static jackctl_internal_t * jackctl_server_get_internal(jackctl_server_t *server, const char *internal_name)
{
const JSList * node_ptr = jackctl_server_get_internals_list(server);
while (node_ptr) {
if (strcmp(jackctl_internal_get_name((jackctl_internal_t *)node_ptr->data), internal_name) == 0) {
return (jackctl_internal_t *)node_ptr->data;
}
node_ptr = jack_slist_next(node_ptr);
}
return NULL;
}
static jackctl_parameter_t * jackctl_get_parameter(const JSList * parameters_list, const char * parameter_name)
{
while (parameters_list) {
if (strcmp(jackctl_parameter_get_name((jackctl_parameter_t *)parameters_list->data), parameter_name) == 0) {
return (jackctl_parameter_t *)parameters_list->data;
}
parameters_list = jack_slist_next(parameters_list);
}
return NULL;
}
#ifdef __ANDROID__
static void jackctl_server_switch_master_dummy(jackctl_server_t * server_ctl, char * master_driver_name)
{
static bool is_dummy_driver = false;
if(!strcmp(master_driver_name, "dummy")) {
return;
}
jackctl_driver_t * driver_ctr;
if(is_dummy_driver) {
is_dummy_driver = false;
driver_ctr = jackctl_server_get_driver(server_ctl, master_driver_name);
} else {
is_dummy_driver = true;
driver_ctr = jackctl_server_get_driver(server_ctl, "dummy");
}
jackctl_server_switch_master(server_ctl, driver_ctr);
}
#endif
static void print_server_drivers(jackctl_server_t *server, FILE* file)
{
const JSList * node_ptr = jackctl_server_get_drivers_list(server);
fprintf(file, "Available backends:\n");
while (node_ptr) {
jackctl_driver_t* driver = (jackctl_driver_t *)node_ptr->data;
fprintf(file, " %s (%s)\n", jackctl_driver_get_name(driver), (jackctl_driver_get_type(driver) == JackMaster) ? "master" : "slave");
node_ptr = jack_slist_next(node_ptr);
}
fprintf(file, "\n");
}
static void print_server_internals(jackctl_server_t *server, FILE* file)
{
const JSList * node_ptr = jackctl_server_get_internals_list(server);
fprintf(file, "Available internals:\n");
while (node_ptr) {
jackctl_internal_t* internal = (jackctl_internal_t *)node_ptr->data;
fprintf(file, " %s\n", jackctl_internal_get_name(internal));
node_ptr = jack_slist_next(node_ptr);
}
fprintf(file, "\n");
}
static void usage(FILE* file, jackctl_server_t *server, bool full = true)
{
jackctl_parameter_t * param;
const JSList * server_parameters;
uint32_t i;
union jackctl_parameter_value value;
fprintf(file, "\n"
"Usage: jackdmp [ --no-realtime OR -r ]\n"
" [ --realtime OR -R [ --realtime-priority OR -P priority ] ]\n"
" (the two previous arguments are mutually exclusive. The default is --realtime)\n"
" [ --name OR -n server-name ]\n"
" [ --timeout OR -t client-timeout-in-msecs ]\n"
" [ --loopback OR -L loopback-port-number ]\n"
" [ --port-max OR -p maximum-number-of-ports]\n"
" [ --slave-backend OR -X slave-backend-name ]\n"
" [ --internal-client OR -I internal-client-name ]\n"
" [ --internal-session-file OR -C internal-session-file ]\n"
" [ --verbose OR -v ]\n"
#ifdef __linux__
" [ --clocksource OR -c [ h(pet) | s(ystem) ]\n"
#endif
" [ --autoconnect OR -a <modechar>]\n");
server_parameters = jackctl_server_get_parameters(server);
param = jackctl_get_parameter(server_parameters, "self-connect-mode");
fprintf(file,
" where <modechar> is one of:\n");
for (i = 0; i < jackctl_parameter_get_enum_constraints_count(param); i++)
{
value = jackctl_parameter_get_enum_constraint_value(param, i);
fprintf(file, " '%c' - %s", value.c, jackctl_parameter_get_enum_constraint_description(param, i));
if (value.c == JACK_DEFAULT_SELF_CONNECT_MODE)
{
fprintf(file, " (default)");
}
fprintf(file, "\n");
}
fprintf(file,
" [ --replace-registry ]\n"
" [ --silent OR -s ]\n"
" [ --sync OR -S ]\n"
" [ --temporary OR -T ]\n"
" [ --version OR -V ]\n"
" -d master-backend-name [ ... master-backend args ... ]\n"
" jackdmp -d master-backend-name --help\n"
" to display options for each master backend\n\n");
if (full) {
print_server_drivers(server, file);
print_server_internals(server, file);
}
}
// Prototype to be found in libjackserver
extern "C" void silent_jack_error_callback(const char *desc);
void print_version()
{
printf( "jackdmp version " VERSION " tmpdir "
jack_server_dir " protocol %d" "\n",
JACK_PROTOCOL_VERSION);
}
int main(int argc, char** argv)
{
jackctl_server_t * server_ctl;
const JSList * server_parameters;
const char* server_name = JACK_DEFAULT_SERVER_NAME;
jackctl_driver_t * master_driver_ctl;
jackctl_driver_t * loopback_driver_ctl = NULL;
int replace_registry = 0;
for(int a = 1; a < argc; ++a) {
if( !strcmp(argv[a], "--version") || !strcmp(argv[a], "-V") ) {
print_version();
return 0;
}
}
const char *options = "-d:X:I:P:uvshrRL:STFl:t:mn:p:C:"
"a:"
#ifdef __linux__
"c:"
#endif
;
struct option long_options[] = {
#ifdef __linux__
{ "clock-source", 1, 0, 'c' },
#endif
{ "internal-session-file", 1, 0, 'C' },
{ "loopback-driver", 1, 0, 'L' },
{ "audio-driver", 1, 0, 'd' },
{ "midi-driver", 1, 0, 'X' },
{ "internal-client", 1, 0, 'I' },
{ "verbose", 0, 0, 'v' },
{ "help", 0, 0, 'h' },
{ "port-max", 1, 0, 'p' },
{ "no-mlock", 0, 0, 'm' },
{ "name", 1, 0, 'n' },
{ "unlock", 0, 0, 'u' },
{ "realtime", 0, 0, 'R' },
{ "no-realtime", 0, 0, 'r' },
{ "replace-registry", 0, &replace_registry, 0 },
{ "loopback", 0, 0, 'L' },
{ "realtime-priority", 1, 0, 'P' },
{ "timeout", 1, 0, 't' },
{ "temporary", 0, 0, 'T' },
{ "silent", 0, 0, 's' },
{ "sync", 0, 0, 'S' },
{ "autoconnect", 1, 0, 'a' },
{ 0, 0, 0, 0 }
};
int i,opt = 0;
int option_index = 0;
char* internal_session_file = NULL;
char* master_driver_name = NULL;
char** master_driver_args = NULL;
int master_driver_nargs = 1;
int loopback = 0;
jackctl_sigmask_t * sigmask;
jackctl_parameter_t* param;
union jackctl_parameter_value value;
std::list<char*> internals_list;
std::list<char*> slaves_list;
std::list<char*>::iterator it;
// Assume that we fail.
int return_value = -1;
bool notify_sent = false;
copyright(stdout);
#if defined(HAVE_DBUS_1) && defined(__linux__)
if (getenv("JACK_NO_AUDIO_RESERVATION"))
server_ctl = jackctl_server_create2(NULL, NULL, NULL);
else
server_ctl = jackctl_server_create2(audio_acquire, audio_release, audio_reserve_loop);
#else
server_ctl = jackctl_server_create2(NULL, NULL, NULL);
#endif
if (server_ctl == NULL) {
fprintf(stderr, "Failed to create server object\n");
return -1;
}
server_parameters = jackctl_server_get_parameters(server_ctl);
opterr = 0;
while (!master_driver_name &&
(opt = getopt_long(argc, argv, options,
long_options, &option_index)) != EOF) {
switch (opt) {
#ifdef __linux__
case 'c':
param = jackctl_get_parameter(server_parameters, "clock-source");
if (param != NULL) {
if (tolower (optarg[0]) == 'h') {
value.ui = JACK_TIMER_HPET;
jackctl_parameter_set_value(param, &value);
} else if (tolower (optarg[0]) == 'c') {
/* For backwards compatibility with scripts, allow
* the user to request the cycle clock on the
* command line, but use the system clock instead
*/
value.ui = JACK_TIMER_SYSTEM_CLOCK;
jackctl_parameter_set_value(param, &value);
} else if (tolower (optarg[0]) == 's') {
value.ui = JACK_TIMER_SYSTEM_CLOCK;
jackctl_parameter_set_value(param, &value);
} else {
usage(stdout, server_ctl);
goto destroy_server;
}
}
break;
#endif
case 'a':
param = jackctl_get_parameter(server_parameters, "self-connect-mode");
if (param != NULL) {
bool value_valid = false;
for (uint32_t k=0; k<jackctl_parameter_get_enum_constraints_count( param ); k++ ) {
value = jackctl_parameter_get_enum_constraint_value( param, k );
if( value.c == optarg[0] )
value_valid = true;
}
if( value_valid ) {
value.c = optarg[0];
jackctl_parameter_set_value(param, &value);
} else {
usage(stdout, server_ctl);
goto destroy_server;
}
}
break;
case 'd':
master_driver_name = optarg;
break;
case 'L':
loopback = atoi(optarg);
break;
case 'X':
slaves_list.push_back(optarg);
break;
case 'I':
internals_list.push_back(optarg);
break;
case 'p':
param = jackctl_get_parameter(server_parameters, "port-max");
if (param != NULL) {
value.ui = atoi(optarg);
jackctl_parameter_set_value(param, &value);
}
break;
case 'm':
break;
case 'u':
break;
case 'v':
param = jackctl_get_parameter(server_parameters, "verbose");
if (param != NULL) {
value.b = true;
jackctl_parameter_set_value(param, &value);
}
break;
case 's':
jack_set_error_function(silent_jack_error_callback);
break;
case 'S':
param = jackctl_get_parameter(server_parameters, "sync");
if (param != NULL) {
value.b = true;
jackctl_parameter_set_value(param, &value);
}
break;
case 'n':
server_name = optarg;
param = jackctl_get_parameter(server_parameters, "name");
if (param != NULL) {
strncpy(value.str, optarg, JACK_PARAM_STRING_MAX);
jackctl_parameter_set_value(param, &value);
}
break;
case 'C':
internal_session_file = optarg;
break;
case 'P':
param = jackctl_get_parameter(server_parameters, "realtime-priority");
if (param != NULL) {
value.i = atoi(optarg);
jackctl_parameter_set_value(param, &value);
}
break;
case 'r':
param = jackctl_get_parameter(server_parameters, "realtime");
if (param != NULL) {
value.b = false;
jackctl_parameter_set_value(param, &value);
}
break;
case 'R':
param = jackctl_get_parameter(server_parameters, "realtime");
if (param != NULL) {
value.b = true;
jackctl_parameter_set_value(param, &value);
}
break;
case 'T':
param = jackctl_get_parameter(server_parameters, "temporary");
if (param != NULL) {
value.b = true;
jackctl_parameter_set_value(param, &value);
}
break;
case 't':
param = jackctl_get_parameter(server_parameters, "client-timeout");
if (param != NULL) {
value.i = atoi(optarg);
jackctl_parameter_set_value(param, &value);
}
break;
case 'h':
usage(stdout, server_ctl);
return_value = 0;
goto destroy_server;
default:
fprintf(stderr, "unknown option character %c\n", optopt);
usage(stdout, server_ctl);
goto destroy_server;
}
}
// Long option with no letter so treated separately
param = jackctl_get_parameter(server_parameters, "replace-registry");
if (param != NULL) {
value.b = replace_registry;
jackctl_parameter_set_value(param, &value);
}
if (!master_driver_name) {
usage(stderr, server_ctl, false);
goto destroy_server;
}
// Master driver
master_driver_ctl = jackctl_server_get_driver(server_ctl, master_driver_name);
if (master_driver_ctl == NULL) {
fprintf(stderr, "Unknown driver \"%s\"\n", master_driver_name);
goto destroy_server;
}
if (jackctl_driver_get_type(master_driver_ctl) != JackMaster) {
fprintf(stderr, "Driver \"%s\" is not a master \n", master_driver_name);
goto destroy_server;
}
if (optind < argc) {
master_driver_nargs = 1 + argc - optind;
} else {
master_driver_nargs = 1;
}
if (master_driver_nargs == 0) {
fprintf(stderr, "No driver specified ... hmm. JACK won't do"
" anything when run like this.\n");
goto destroy_server;
}
master_driver_args = (char **) malloc(sizeof(char *) * master_driver_nargs);
master_driver_args[0] = master_driver_name;
for (i = 1; i < master_driver_nargs; i++) {
master_driver_args[i] = argv[optind++];
}
if (jackctl_driver_params_parse(master_driver_ctl, master_driver_nargs, master_driver_args)) {
goto destroy_server;
}
// Setup signals
sigmask = jackctl_setup_signals(0);
// Open server
if (! jackctl_server_open(server_ctl, master_driver_ctl)) {
fprintf(stderr, "Failed to open server\n");
goto destroy_server;
}
// Slave drivers
for (it = slaves_list.begin(); it != slaves_list.end(); it++) {
jackctl_driver_t * slave_driver_ctl = jackctl_server_get_driver(server_ctl, *it);
if (slave_driver_ctl == NULL) {
fprintf(stderr, "Unknown driver \"%s\"\n", *it);
goto close_server;
}
if (jackctl_driver_get_type(slave_driver_ctl) != JackSlave) {
fprintf(stderr, "Driver \"%s\" is not a slave \n", *it);
goto close_server;
}
if (!jackctl_server_add_slave(server_ctl, slave_driver_ctl)) {
fprintf(stderr, "Driver \"%s\" cannot be loaded\n", *it);
goto close_server;
}
}
// Loopback driver
if (loopback > 0) {
loopback_driver_ctl = jackctl_server_get_driver(server_ctl, "loopback");
if (loopback_driver_ctl != NULL) {
const JSList * loopback_parameters = jackctl_driver_get_parameters(loopback_driver_ctl);
param = jackctl_get_parameter(loopback_parameters, "channels");
if (param != NULL) {
value.ui = loopback;
jackctl_parameter_set_value(param, &value);
}
if (!jackctl_server_add_slave(server_ctl, loopback_driver_ctl)) {
fprintf(stderr, "Driver \"loopback\" cannot be loaded\n");
goto close_server;
}
} else {
fprintf(stderr, "Driver \"loopback\" not found\n");
goto close_server;
}
}
// Start the server
if (!jackctl_server_start(server_ctl)) {
fprintf(stderr, "Failed to start server\n");
goto close_server;
}
// Internal clients
for (it = internals_list.begin(); it != internals_list.end(); it++) {
jackctl_internal_t * internal_driver_ctl = jackctl_server_get_internal(server_ctl, *it);
if (internal_driver_ctl == NULL) {
fprintf(stderr, "Unknown internal \"%s\"\n", *it);
goto stop_server;
}
if (!jackctl_server_load_internal(server_ctl, internal_driver_ctl)) {
fprintf(stderr, "Internal client \"%s\" cannot be loaded\n", *it);
goto stop_server;
}
}
if (internal_session_file != NULL) {
if (!jackctl_server_load_session_file(server_ctl, internal_session_file)) {
fprintf(stderr, "Internal session file %s cannot be loaded!\n", internal_session_file);
goto stop_server;
}
}
notify_server_start(server_name);
notify_sent = true;
return_value = 0;
#if HAVE_SYSTEMD
sd_notify(0, "READY=1");
#endif
// Waits for signal
#ifdef __ANDROID__
//reserve SIGUSR2 signal for switching master driver
while(1) {
int signal = jackctl_wait_signals_and_return(sigmask);
if (signal == SIGUSR2) {
jackctl_server_switch_master_dummy(server_ctl, master_driver_name);
} else {
break;
}
}
#else
jackctl_wait_signals(sigmask);
#endif
#if HAVE_SYSTEMD
sd_notify(0, "STOPPING=1");
#endif
stop_server:
if (!jackctl_server_stop(server_ctl)) {
fprintf(stderr, "Cannot stop server...\n");
}
close_server:
if (loopback > 0 && loopback_driver_ctl) {
jackctl_server_remove_slave(server_ctl, loopback_driver_ctl);
}
// Slave drivers
for (it = slaves_list.begin(); it != slaves_list.end(); it++) {
jackctl_driver_t * slave_driver_ctl = jackctl_server_get_driver(server_ctl, *it);
if (slave_driver_ctl) {
jackctl_server_remove_slave(server_ctl, slave_driver_ctl);
}
}
// Internal clients
for (it = internals_list.begin(); it != internals_list.end(); it++) {
jackctl_internal_t * internal_driver_ctl = jackctl_server_get_internal(server_ctl, *it);
if (internal_driver_ctl) {
jackctl_server_unload_internal(server_ctl, internal_driver_ctl);
}
}
jackctl_server_close(server_ctl);
destroy_server:
jackctl_server_destroy(server_ctl);
if (notify_sent) {
notify_server_stop(server_name);
}
return return_value;
}
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